“It’s interesting that the issue at hand isn’t that the characters are lesbians, but rather that DC Comics doesn’t want any of their characters to be married, straight or gay. As noted above, Superman’s marriage to Lois Lane was erased from continuity, as was that of The Flash. Over at Marvel Comics, Spider-Man’s marriage was also wiped from existence recently.”
For all their pretensions of “maturity”, the comics industry can’t handle complexity very well. So instead they substitute a little of the old ultra-violence instead. Relationships are hard to write, but rape isn’t.
There have been exceptions, of course...the comics of Alan Moore and Neil Gaiman come to mind immediately... but (to paraphrase Theodore Sturgeon) 90% of comics stink. But then, 90% of everything stinks.
http://en.wikipedia.org/wiki/Sturgeon%27s_Law